package com.itheima.service;

import com.itheima.pojo.Member;

import java.util.List;

/**
 * @author ：hg
 * @date ：Created in 2021/12/20 23:29
 * @description：
 */
public interface MemberService {

    Member findByTelephone(String telephone);

    void add(Member member);

    public List<Integer> findMemberCountByMonth(List<String> month);
}
